224 The Ottawa Naturalist. [January 



base ot the abdomen red, is evidently the same species. It does not 

 answer to the description of riisticus and belongs like nigripes to 

 Brachystegus. 



Subfamily IV. — Astatince. 

 y3. — A status u n i c o 1 o r, Say. One female, one male ; the latter is con- 

 spicuous by the large eyes meeting at vertex. Taken also by Dr. 

 Fletcher and Mr. Guignard, 



Family XXV. — Sf)hegidae. 



Subfamily I. — Spheghice. 



74. Isodontia philadelphica, Lepel. One male received from Mr. 



Guignard. It has also been taken by Dr. Fletcher. 



75. Priononyx bifoveolatus, Tischb. Mr. Guignard sent to Pro- 



vancher the types of P. canadensis, which is a sj'nonym. I have 

 not met with either of the species. Provancher also records Sphex 

 i c h n e u m o n e a, Linn., as taken at Ottawa, but this is an evident 

 error, as Mr. Guignard, to whom it is credited, has no recollection of 

 capturing this fine species which is common westward. 



Subfamily II. — Ammophilince . 



76. Psammophila communis. Cress. Abdomen partly red ; i female, 



5 males. 



77. Psammophila 1 u c t u o s a. Smith. All black ; 3 females. 



78. Ammophila gryphus, Smith. This large species appears to be 



rare. I have only one male, and Dr. Fletcher has captured only one 

 individual. 



79. Ammophila conditor, Smith. This appears to be our com- 



monest species, and the males appear to much more numerous than 

 the females; i female, 12 males. 



Subfamily III. — Sceliphro7iince. 



80. Sceliphron cementarius, Drury. This large wasp is at once 



separated from the slender-waisted species of the previous subfamily 

 by its yellow-banded legs. It may frequently be seen making its 

 mud-cells under windowsills, etc., and is a common form ; 3 females, 

 3 males. 



81. Chalybion coeruleum, Linn. This is a fine insect, differing from 



all our fossorial wasps in its bright blue body and dark wings. Like 

 the preceding form it is common and a builder of mud-cells ; 4 

 females, 4 males. 



^^^^ 



